| 30401 | Tsalta Corporation | Oklahoma City, OK 73116 | Oil & Gas Operator | Nov 1998 |
| 30402 | Tsar Energy, LLC | Dallas, TX 75205 | Oil & Gas Operator | Dec 2025 |
| 30403 | Tsar Operating Company | Fort Worth, TX 76116 | Oil & Gas Operator | Jul 2021 |
| 30404 | Tschoepe, Arthur J. | Leakey, TX 78873 | Oil & Gas Operator | Jun 2001 |
| 30405 | TSF Operating | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 30406 | Tsoco | Tuleta, TX 78162 | Oil & Gas Operator | Apr 2017 |
| 30407 | Tsoco & W. M. Null | Pettus, TX 78146 | Oil & Gas Operator | Aug 2002 |
| 30408 | TSW Oil & Gas, LLC | Abilene, TX 79602 | Oil & Gas Operator | Jan 2016 |
| 30409 | TSW Oil LLC | Dixon, KY 42409 | Oil Operator | Dec 2023 |
| 30410 | TT Operating, LLC | Kilgore, TX 75663 | Oil & Gas Operator | Dec 2025 |
| 30411 | TTK Energy LLC | Kilgore, TX 75663 | Oil Operator | Dec 2025 |
| 30412 | TTL Energy Resources, Inc. | Borger, TX 79008 | Oil & Gas Operator | Aug 2013 |
| 30413 | Tubbs Patrick | Neodesha, KS 66757 | Oil Operator | Sep 2008 |
| 30414 | Tuckco Petroleum Corporation | Andrews, TX 79714 | Oil & Gas Operator | Dec 2025 |
| 30415 | Tucker Drilling Company, Inc. | San Angelo, TX 76903 | Oil & Gas Operator | Jul 1996 |
| 30416 | Tucker Gary & Deedee | Jennings, OK 74038 | Oil & Gas Operator | Jun 2025 |
| 30417 | Tucker Operating Co., Inc. | Victoria, TX 77903 | Oil & Gas Operator | Dec 2025 |
| 30418 | Tucker Petroleum, Inc. | Corpus Chrsti, TX 78468 | Oil & Gas Operator | Dec 2025 |
| 30419 | Tucker Resources, Inc. | Wichita Falls, TX 76301 | Oil & Gas Operator | Aug 2003 |
| 30420 | Tucker Ron & Co | Norman, OK 73069-8511 | Gas Operator | Sep 2017 |
| 30421 | Tucker, Carl H., Jr. | Independence, KS 67301 | Oil Operator | Jul 1996 |
| 30422 | Tucker, Gene | | Oil & Gas Operator | Dec 2011 |
| 30423 | Tucker, Stephen A. | Independence, KS 67301 | Oil Operator | Feb 2009 |
| 30424 | Tucker, Timothy R | | Oil Operator | Sep 2025 |
| 30425 | Tucson Oil & Gas Inc | | Oil & Gas Operator | Aug 1994 |
| 30426 | Tudex Petroleum Inc | | Oil & Gas Operator | Sep 2019 |
| 30427 | Tug Fork Development | Catlettsburg, KY 41129 | Gas Operator | Dec 2021 |
| 30428 | Tug Hill Operating, LLC | Fort Worth, TX 76107 | Oil & Gas Operator | Dec 2021 |
| 30429 | Tug Oil & Gas, L.L.C. | Breckenridge, TX 76424 | Oil & Gas Operator | Dec 2025 |
| 30430 | Tularosa Operating Company | Kerrville, TX 78029 | Oil & Gas Operator | Mar 2024 |
| 30431 | Tuleta Energy Partners, LLC | Norman, OK 73072 | Oil & Gas Operator | Dec 2025 |
| 30432 | Tulip Industries, Inc. | | Oil & Gas Operator | Feb 2024 |
| 30433 | Tulsa Energy Inc | Tulsa, OK 74133 | Oil & Gas Operator | May 2013 |
| 30434 | Tulsa Energy Partners LLC | Tulsa, OK 74103-4461 | Oil & Gas Operator | Oct 2025 |
| 30435 | Tulsa Minerals Inc | Tulsa, OK 74136-1045 | Oil & Gas Operator | May 2013 |
| 30436 | Tulum Corporation | Oklahoma City, OK 73101-0125 | Oil & Gas Operator | Feb 2025 |
| 30437 | Tumble Weed Production Co. | Borger, TX 79008 | Oil & Gas Operator | Dec 1994 |
| 30438 | Tumbleweed Energy Limited | Midland, TX 79704 | Oil & Gas Operator | Dec 2022 |
| 30439 | Tundra Energy | | Oil Operator | Jan 2025 |
| 30440 | Tundra Operating LLC | Spring, TX 77386 | Oil Operator | May 2017 |
| 30441 | Turkey Run LLC | Arcade, NY 14009 | Gas Operator | Dec 2024 |
| 30442 | Turm Oil Inc | Butler, PA 16002-0471 | Oil & Gas Operator | Dec 2024 |
| 30443 | Turnbow Drilling Co. | Holliday, TX 76366 | Oil & Gas Operator | Jul 2025 |
| 30444 | Turnbow John R Company | Tulsa, OK 74120-2420 | Oil & Gas Operator | Aug 2006 |
| 30445 | Turnbull Gas, LLC | North Collins, NY 14111 | Gas Operator | Dec 2024 |
| 30446 | Turnco Drilling, Inc. | Portland, OR 97208 | Oil & Gas Operator | Dec 2009 |
| 30447 | Turner John O | Drumright, OK 74030-1216 | Oil & Gas Operator | Feb 1998 |
| 30448 | Turner Oil Company | Yale, OK 74085-0234 | Oil & Gas Operator | Nov 2014 |
| 30449 | Turner Petroleum Corp And Patrick Petroleum Corp | | Oil & Gas Operator | Mar 1991 |
| 30450 | Turner Production | Big Lake, TX 76932 | Oil & Gas Operator | Dec 2025 |
| 30451 | Turner Production Co | Dallas, TX 75206 | Oil & Gas Operator | Nov 2023 |
| 30452 | Turner Randall L | Duncan, OK 73533-4826 | Oil Operator | Jun 2025 |
| 30453 | Turner Resources Inc | Hennessey, OK 73742 | Oil & Gas Operator | Oct 2025 |
| 30454 | Turner Smith & Associates | Englewood, CO 80111 | Oil & Gas Operator | May 1994 |
| 30455 | Turner, D. Ann Garrett, Est. Of | Big Spring, TX 79721 | Oil & Gas Operator | Jan 1999 |
| 30456 | Turner, Greg | Cross Plains, TX 76443 | Oil & Gas Operator | Dec 2025 |
| 30457 | Turner, Jack L | Smackover, AR 71762 | Oil Operator | Jan 2025 |
| 30458 | Turner, M. O. | San Antonio, TX 78278 | Oil & Gas Operator | Apr 2003 |
| 30459 | Turner, Randy | Olney, TX 76374 | Oil & Gas Operator | Jan 2005 |
| 30460 | Turning Point Oil, Inc. | Eastland, TX 76448 | Oil & Gas Operator | Jan 2021 |
| 30461 | Turnkey E&P Corporation | | Oil & Gas Operator | Dec 2010 |
| 30462 | Turntable Energy Inc | Ponca City, OK 74604 | Oil & Gas Operator | Jul 2025 |
| 30463 | Turpin Ledon Production | Ada, OK 74820-0549 | Oil Operator | Oct 2025 |
| 30464 | Turquoise Bay Corporation | Odessa, TX 79760 | Oil & Gas Operator | Dec 2018 |
| 30465 | Turrentine Oil & Gas, Inc. | Horseshoe Bay, TX 78657 | Oil & Gas Operator | Oct 2019 |
| 30466 | Turrentine Oil And Gas | Levelland, TX 79336 | Oil & Gas Operator | Feb 1996 |
| 30467 | Turrill Sheldon L | Westerville, OH 43081 | Oil & Gas Operator | Dec 1984 |
| 30468 | Turtle Mountain Gas & Oil, Inc. | | Oil & Gas Operator | Oct 2006 |
| 30469 | Tuscany Deli & Meats, Inc. | Fredonia, NY 14063 | Gas Operator | Dec 2024 |
| 30470 | Tuscany Gas Limited Liability Company | | Gas Operator | Dec 2021 |
| 30471 | Tuscany Operating LLC | Oklahoma City, OK 73106 | Oil & Gas Operator | Sep 2014 |
| 30472 | Tuscola Energy Inc | | Oil & Gas Operator | Oct 2025 |
| 30473 | Tuskar (Texas), Inc. | Nichols Hill, OK 73116 | Oil & Gas Operator | Jan 2016 |
| 30474 | Tussel Clarence Jr | Jefferson, OH 44047 | Oil & Gas Operator | Dec 2019 |
| 30475 | Tutcher, Dan C. | Houston, TX 77002 | Oil Operator | Dec 2004 |
| 30476 | Tuthill & Barbee | Amarillo, TX 79101 | Oil & Gas Operator | Nov 1994 |
| 30477 | Tuthill S Keith & Bill Barbee | Amarillo, TX 79101-1427 | Oil & Gas Operator | Dec 2004 |
| 30478 | Tuway Oil, Inc | | Oil & Gas Operator | Jun 2006 |
| 30479 | TW Oil LLC | Fordsville, KY 42343 | Oil & Gas Operator | Dec 2024 |
| 30480 | TW Phillips Gas Supply Corp | Butler, PA 16001-4904 | Oil & Gas Operator | Dec 2011 |
| 30481 | Twain Energy LLC | Ridgeland, MS 39157 | Oil & Gas Operator | Oct 2025 |
| 30482 | TWC Oil Company, Inc. | | Oil Operator | Jan 2025 |
| 30483 | Twenty First Century Res Inc | Lajolla, CA 92037-7044 | Oil & Gas Operator | Mar 2015 |
| 30484 | Twenty/Twenty Oil & Gas Inc | Hennessey, OK 73742 | Oil & Gas Operator | Oct 2025 |
| 30485 | Twilco Operating LLC | Holliday, TX 76366 | Oil Operator | Dec 2025 |
| 30486 | Twilight Energy LLC | Fort Worth, TX 76185 | Oil & Gas Operator | Dec 2025 |
| 30487 | Twin Arrow Inc | Rangely, CO 81648 | Oil & Gas Operator | Sep 2009 |
| 30488 | Twin City Gas | | Gas Operator | Nov 1997 |
| 30489 | Twin Eagle Petro | | Oil Operator | Aug 1990 |
| 30490 | Twin Eagle Petro Corp | | Gas Operator | Feb 1990 |
| 30491 | Twin Eagle Petroleum Corp | Tulsa, OK 74136 | Oil & Gas Operator | Jun 2002 |
| 30492 | Twin M, Inc. | Kingman, KS 67068 | Oil & Gas Operator | Jun 2025 |
| 30493 | Twin Oaks Construction Company | Irving, TX 75063 | Oil & Gas Operator | Dec 2025 |
| 30494 | Twin Oil Partnership LLC | | Oil Operator | Dec 2024 |
| 30495 | Twin Star Petrol | | Oil & Gas Operator | Jan 1989 |
| 30496 | Twin Star Petroleum, Inc. | Tulsa, OK 74146 | Gas Operator | Feb 1998 |
| 30497 | Twin Valley Enterprises, Inc. | Independence, KS 67301 | Oil & Gas Operator | Jan 2013 |
| 30498 | Twiner Oil & Gas Corporation | | Oil & Gas Operator | Oct 1988 |
| 30499 | Twinoaks Oil & Gas Co | Newark, OH 43058 | Oil & Gas Operator | Dec 2024 |
| 30500 | Twinoco | Caney, KS 67333 | Oil Operator | Nov 1996 |